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                        浮动float
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                        定位position
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                            <b>2.9.</b>
                        
                        阴影shadow
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                        选择器
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                            <b>2.11.</b>
                        
                        弹性盒子flex
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                            <b>2.12.</b>
                        
                        动画
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                            <b>2.13.</b>
                        
                        拓展内容
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                            <b>3.</b>
                        
                        JS
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                        if语句
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                        数据类型的转换
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                        数值类型Number
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                        字符串String
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                        数组Array
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                        数组的遍历
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                            <b>3.7.</b>
                        
                        filter过滤
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                            <b>3.8.</b>
                        
                        function函数
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                        定时器
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                        JS常用事件
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                        作用域-作用域链
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                            <b>4.</b>
                        
                        响应式Bootstrap
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                            <b>5.</b>
                        
                        ajax
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                            <b>6.</b>
                        
                        swiper
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                            <b>7.</b>
                        
                        变量提升和函数提升
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                            <b>8.</b>
                        
                        浏览器的渲染问题
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                        回流和重绘
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                        小事件
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                            <b>10.</b>
                        
                        创建对象的模式
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                        工厂模式
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                            <b>10.2.</b>
                        
                        构造函数
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                            <b>10.3.</b>
                        
                        原型模式和混合模式
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                            <b>11.</b>
                        
                        原型链
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                            <b>12.</b>
                        
                        this
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                            <b>13.</b>
                        
                        事件代理/事件委托
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                            <b>14.</b>
                        
                        同步&amp;异步任务
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                            <b>15.</b>
                        
                        防抖&amp;节流
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                            <b>16.</b>
                        
                        ES6
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                            <b>16.1.</b>
                        
                        let/const
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                            <b>16.2.</b>
                        
                        解构赋值
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                            <b>16.3.</b>
                        
                        Promise
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                            <b>16.4.</b>
                        
                        async&amp;await
                    </a>
            
            
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                            <b>16.5.</b>
                        
                        class
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                            <b>16.6.</b>
                        
                        module
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                            <b>16.7.</b>
                        
                        Set
                    </a>
            
            
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        <li class="chapter " data-level="16.8" data-path="md/16ES6/Map.html">
            
                
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                            <b>16.8.</b>
                        
                        Map
                    </a>
            
            
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            </ul>
            
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        <li class="chapter " data-level="17" data-path="md/17garbageCollection/garbageCollection.html">
            
                
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                            <b>17.</b>
                        
                        垃圾回收机制
                    </a>
            
            
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        <li class="chapter " data-level="18" data-path="md/18closure/closure.html">
            
                
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                            <b>18.</b>
                        
                        闭包
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        <li class="chapter " data-level="19" data-path="md/19Vue/vue.html">
            
                
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                        <i class="fa fa-check"></i>
                        
                            <b>19.</b>
                        
                        Vue
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="19.1" data-path="md/19Vue/模板语法.html">
            
                
                    <a href="../../md/19Vue/模板语法.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>19.1.</b>
                        
                        模板语法
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="19.2" data-path="md/19Vue/条件渲染.html">
            
                
                    <a href="../../md/19Vue/条件渲染.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>19.2.</b>
                        
                        条件渲染
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="19.3" data-path="md/19Vue/列表渲染.html">
            
                
                    <a href="../../md/19Vue/列表渲染.html">
                
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                            <b>19.3.</b>
                        
                        列表渲染
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="19.4" data-path="md/19Vue/class&amp;style.html">
            
                
                    <a href="../../md/19Vue/class&amp;style.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>19.4.</b>
                        
                        class&amp;style
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="19.5" data-path="md/19Vue/v-model.html">
            
                
                    <a href="../../md/19Vue/v-model.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>19.5.</b>
                        
                        v-model
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="19.6" data-path="md/19Vue/computed.html">
            
                
                    <a href="../../md/19Vue/computed.html">
                
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                            <b>19.6.</b>
                        
                        计算属性
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="19.7" data-path="md/19Vue/watch侦听.html">
            
                
                    <a href="../../md/19Vue/watch侦听.html">
                
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                            <b>19.7.</b>
                        
                        watch侦听
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="19.8" data-path="md/19Vue/filter.html">
            
                
                    <a href="../../md/19Vue/filter.html">
                
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                            <b>19.8.</b>
                        
                        过滤器
                    </a>
            
            
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                            <b>19.9.</b>
                        
                        局部&amp;全局组件
                    </a>
            
            
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        <li class="chapter " data-level="19.10" data-path="md/19Vue/通讯&amp;传递信息.html">
            
                
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                        <i class="fa fa-check"></i>
                        
                            <b>19.10.</b>
                        
                        通讯&amp;传递信息
                    </a>
            
            
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        <li class="chapter " data-level="19.11" data-path="md/19Vue/动态组件&amp;keepAlive.html">
            
                
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                            <b>19.11.</b>
                        
                        动态组件&amp;keepAlive
                    </a>
            
            
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        <li class="chapter " data-level="19.12" data-path="md/19Vue/插槽slot.html">
            
                
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                            <b>19.12.</b>
                        
                        插槽slot
                    </a>
            
            
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                            <b>19.13.</b>
                        
                        过渡和动画
                    </a>
            
            
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        <li class="chapter " data-level="19.14" data-path="md/19Vue/生命周期.html">
            
                
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                            <b>19.14.</b>
                        
                        生命周期
                    </a>
            
            
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                            <b>20.</b>
                        
                        Vue路由router
                    </a>
            
            
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                            <b>21.</b>
                        
                        JS面试题
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    <h1>
        <i class="fa fa-circle-o-notch fa-spin"></i>
        <a href="../../" >小熊的电子书</a>
    </h1>
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            <div class="page-wrapper" tabindex="-1" role="main">
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                    <section class="normal" id="section-">
                    
                        <h1 id="&#x590D;&#x6742;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x51FD;&#x6570;function">&#x590D;&#x6742;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x51FD;&#x6570;function</h1>
<ul>
<li>&#x4E00;&#x3001;&#x51FD;&#x6570;&#x7684;&#x58F0;&#x660E;&#x5F0F;&#xFF1A;function &#x51FD;&#x6570;&#x540D;(&#x53C2;&#x6570;1,&#x53C2;&#x6570;2){ &#x8BED;&#x53E5; }</li>
<li><p>&#x4E8C;&#x3001;&#x51FD;&#x6570;&#x7684;&#x7684;&#x5B9A;&#x4E49;&#x5F0F;&#xFF1A;  var &#x51FD;&#x6570;&#x540D; = function(){ &#x8BED;&#x53E5; }</p>
</li>
<li><p>&#x51FD;&#x6570;&#x7684;&#x9ED8;&#x8BA4;&#x8FD4;&#x56DE;&#x503C;&#x5F0F;undefined&#xFF0C;&#x53EF;&#x7531;return&#x91CD;&#x65B0;&#x6307;&#x5B9A;</p>
</li>
</ul>
<h4 id="&#x51FD;&#x6570;&#x5185;&#x90E8;&#x7684;&#x9ED8;&#x8BA4;&#x53C2;&#x6570;">&#x51FD;&#x6570;&#x5185;&#x90E8;&#x7684;&#x9ED8;&#x8BA4;&#x53C2;&#x6570;</h4>
<ul>
<li>arguments&#xFF1A;&#x7528;&#x4E8E;&#x63A5;&#x53D7;&#x6240;&#x6709;&#x5B9E;&#x53C2;&#x7684;&#x5BF9;&#x8C61;&#xFF0C;&#x5982;&#x679C;&#x5728;&#x51FD;&#x6570;&#x5185;&#x4FEE;&#x6539; arguments&#x5185;&#x5BB9;&#xFF0C;&#x4F1A;&#x5BFC;&#x81F4;&#x5F62;&#x53C2;a&#xFF0C;b&#x53D1;&#x751F;&#x53D8;&#x5316;</li>
<li>this&#xFF1A;&#x8868;&#x793A;&#x51FD;&#x6570;&#x6267;&#x884C;&#x65F6;&#xFF0C;&#x6240;&#x5728;&#x7684;&#x5BF9;&#x8C61;&#x5BF9;&#x8C61;&#x6307;&#x5411;&#xFF1B;&#x4F5C;&#x4E3A;&#x51FD;&#x6570;&#x76F4;&#x63A5;&#x8C03;&#x7528;&#x65F6;&#xFF0C;&#x5185;&#x90E8;this&#x6307;&#x5411;window&#xFF1B;</li>
</ul>
<p>*</p>
<pre><code>    function sum(a,b){
            console.log(arguments[0]);//5
            console.log(this);//window
            return a+b;
    }
     console.log(sum(5,10)) //15
</code></pre><ul>
<li>&#x5904;&#x7406;&#x5269;&#x4F59;&#x53C2;&#x6570;:...args</li>
<li>rest&#x53C2;&#x6570;&#x7528;&#x4E8E;&#x63A5;&#x53D7;&#x5269;&#x4F59;&#x53C2;&#x6570;&#xFF0C;&#x6CE8;&#x610F;&#x8981;&#x4F5C;&#x4E3A;&#x6700;&#x540E;&#x4E00;&#x4E2A;&#x5F62;&#x53C2;&#x4F7F;&#x7528;&#xFF0C;&#x5982;&#x679C;&#x540E;&#x9762;&#x8FD8;&#x6709;&#x522B;&#x7684;&#x53C2;&#x6570;&#x7684;&#x8BDD;&#xFF0C;&#x5C31;&#x4F1A;&#x62A5;&#x9519;</li>
</ul>
<pre><code>    function sum1(...args){
                     //for &#x5FAA;&#x73AF;&#x7D2F;&#x52A0;
                     // var all = 0;
                     // for (var i = 0; i &lt; args.length; i++) {
                     //  all+=args[i];
                     // }
                     // return all;

                     //&#x6570;&#x7EC4;&#x7D2F;&#x52A0;&#x51FD;&#x6570; reduce +&#x7BAD;&#x5934;&#x51FD;&#x6570;
                     return args.reduce((initial,el)=&gt;initial+el);
    }
    console.log(sum1(1,2,3,4,5,6));//21
</code></pre><h3 id="&#x51FD;&#x6570;&#x7684;&#x8C03;&#x7528;&#x65B9;&#x5F0F;">&#x51FD;&#x6570;&#x7684;&#x8C03;&#x7528;&#x65B9;&#x5F0F;</h3>
<ol>
<li>&#x51FD;&#x6570;&#x76F4;&#x63A5;&#x8C03;&#x7528; <pre><code>function fn() {
     console.log(&quot;&#x51FD;&#x6570;&#x76F4;&#x63A5;&#x8C03;&#x7528;&quot;);//&#x51FD;&#x6570;&#x76F4;&#x63A5;&#x8C03;&#x7528;
   }
   fn();
</code></pre></li>
<li>&#x4F5C;&#x4E3A;&#x5BF9;&#x8C61;&#x7684;&#x5C5E;&#x6027;/&#x65B9;&#x6CD5;&#x8C03;&#x7528;<pre><code>var obj = {
     say: function () {
       console.log(&quot;&#x8BF4;&#x70B9;&#x4EC0;&#x4E48;&quot;);
     },
   };
   obj.say();
</code></pre></li>
<li><p>&#x4F7F;&#x7528;call() apply() &#x8C03;&#x7528;&#x51FD;&#x6570; </p>
<pre><code>function sayName() {
     //this:&#x51FD;&#x6570;&#x6267;&#x884C;&#x65F6;&#x6240;&#x5728;&#x7684;&#x5BF9;&#x8C61;
     return &quot;&#x6211;&#x53EB;&quot; + this.name;
   }

   var people = {
     name: &quot;melon&quot;,
     age: &quot;18&quot;,
   };

   console.log(people.sayName); //undefined,&#x5BF9;&#x8C61;&#x8EAB;&#x4E0A;&#x6CA1;&#x6709;&#x5BF9;&#x5E94;&#x65B9;&#x6CD5;
   console.log(sayName.call(people)); //&#x6211;&#x53EB;melon
   console.log(sayName.apply(people)); //&#x6211;&#x53EB;melon
</code></pre></li>
<li><p>&#x4F5C;&#x4E3A;&#x6784;&#x9020;&#x51FD;&#x6570;&#x8C03;&#x7528;&#xFF1B;</p>
<pre><code> function Cat(color){
     this.color = color;
 }

 let whitecat = new Cat(&quot;white&quot;);
</code></pre><h3 id="call-&#x548C;-apply-&#x7684;&#x533A;&#x522B;">call &#x548C; apply &#x7684;&#x533A;&#x522B;</h3>
</li>
<li>call &#x548C; apply &#x53EF;&#x4EE5;&#x4E3A;&#x51FD;&#x6570;&#x6267;&#x884C;&#x65F6;&#xFF0C;&#x4E3A;&#x51FD;&#x6570;&#x6307;&#x5B9A;&#x5185;&#x90E8;this&#x7684;&#x6307;&#x5411;</li>
<li>function.call(thisArg,arg1,arg2,arg3);</li>
<li>function.apply(thisArg,[arg1,arg2,arg3]); &#x5982;&#x679C;&#x4E0D;&#x77E5;&#x9053;&#x53C2;&#x6570;&#x7684;&#x6570;&#x91CF;&#xFF0C;&#x7528; ...arg &#x6765;&#x8868;&#x793A;,apply(thisArg,...arg)</li>
<li><p><strong>&#x9762;&#x5411;&#x5BF9;&#x8C61;&#x4E2D;&#xFF0C;&#x91CD;&#x8981;&#x7684;&#x4E00;&#x70B9;&#xFF0C;&#x5C31;&#x662F;&#x628A;&#x53D8;&#x91CF;&#x548C;&#x65B9;&#x6CD5;&#x4F5C;&#x4E3A;&#x5BF9;&#x8C61;&#x7684;&#x5C5E;&#x6027;&#x548C;&#x65B9;&#x6CD5;&#xFF0C;&#x901A;&#x5E38;&#x4F1A;&#x4F7F;&#x7528;this&#x6765;&#x5F15;&#x7528;&#x8BE5;&#x5BF9;&#x8C61;</strong></p>
</li>
<li><p>&#x5206;&#x522B;&#x8C03;&#x7528;&#x51FD;&#x6570;&#x5B9E;&#x73B0;&#x5BF9;&#x8C61;&#x6570;&#x7EC4;&#x7684;&#x503C;&#x76F8;&#x52A0;&#xFF0C;&#x4EE3;&#x7801;&#x5982;&#x4E0B;</p>
</li>
</ol>
<pre><code>    let data1 = {
        arr : [10,20,30,40]
    }
    function sum(){
        //&#x8FD0;&#x7528;&#x6570;&#x7EC4;&#x91CC;&#x9762;&#x7684;reduce&#x65B9;&#x6CD5;
        let res = this.arr.reduce(function(inital,el){
            return inital+el;
        })
        return res;
    }
    //&#x4E0B;&#x65B9;&#x4EE3;&#x7801;&#xFF0C;&#x5B9E;&#x9645;&#x4E0A;&#x53D8;&#x6210;&#x4E86;&#x7528;data1&#x5BF9;&#x8C61;&#x6765;&#x8C03;&#x7528;sum&#x51FD;&#x6570;&#xFF0C;&#x800C;&#x4E0D;&#x662F;&#x50CF;&#x8FC7;&#x5F80;&#x76F4;&#x63A5;&#x8C03;&#x7528;&#x51FD;&#x6570;&#x5E76;&#x4F20;&#x9012;&#x6570;&#x636E;
    console.log(sum.call(data1));//100
    console.log(sum.call(data1));//100

     //call &#x548C; apply &#x7684;&#x533A;&#x522B;&#xFF1B;
     //&#x4F20;&#x9012;&#x53C2;&#x6570;&#x65F6;&#xFF0C;call&#x9700;&#x8981;&#x4E00;&#x4E2A;&#x4E2A;&#x4F20;&#x9012;&#xFF0C;&#x4F7F;&#x7528;&#x9017;&#x53F7;&#x9694;&#x5F00;&#xFF1B;&#x800C;apply&#x5219;&#x662F;&#x7528;&#x6570;&#x7EC4;&#x88C5;&#x53D6;&#x6240;&#x6709;&#x53C2;&#x6570;&#xFF0C;&#x4E00;&#x6B21;&#x6027;&#x4F20;&#x5165;&#xFF1B;
        function test(arg1,arg2){
            console.log(arg1,arg2);
        }

        //&#x7B2C;&#x4E00;&#x4E2A;&#x503C; thisArg &#x8868;&#x793A;&#x6307;&#x5411;
        test.call(window,10,20);
        test.apply(window,[10,20]);
</code></pre><h3 id="&#x62D3;&#x5C55;bind&#x65B9;&#x6CD5;&#x7684;&#x4F7F;&#x7528;">&#x62D3;&#x5C55;bind()&#x65B9;&#x6CD5;&#x7684;&#x4F7F;&#x7528;</h3>
<ul>
<li>bind:&#x514B;&#x9686;&#x5DE6;&#x4FA7;&#x51FD;&#x6570;&#xFF0C;&#x5E76;&#x4E14;&#x6307;&#x5B9A;&#x8BE5;&#x51FD;&#x6570;&#x5185;&#x90E8;this&#x7684;&#x6307;&#x5411;&#xFF0C;&#x8FD4;&#x56DE;&#x65B0;&#x51FD;&#x6570;&#xFF1B;</li>
<li><strong>&#x65B0;&#x51FD;&#x6570;&#x4E0D;&#x4F1A;&#x7ACB;&#x523B;&#x6267;&#x884C;</strong> &#x4E0E;call &#x548C; apply &#x7684;&#x4E0D;&#x540C;&#x70B9;</li>
<li>&#x5B9E;&#x73B0;&#x4FE9;&#x4E2A;&#x6309;&#x94AE;&#x5206;&#x522B;&#x8F93;&#x51FA;&#x4E0D;&#x540C;&#x7684;&#x6570;&#x636E;</li>
</ul>
<pre><code>    &lt;body&gt;
    &lt;button class=&quot;btn1&quot;&gt;&#x6309;&#x94AE;&#x4E00;&lt;/button&gt;
    &lt;br /&gt;
    &lt;button class=&quot;btn2&quot;&gt;&#x6309;&#x94AE;&#x4E8C;&lt;/button&gt;
    &lt;script&gt;
      let btn1 = document.querySelector(&quot;.btn1&quot;);
      let btn2 = document.querySelector(&quot;.btn2&quot;);
      let data1 = {
        msg: &quot;&#x6211;&#x662F;&#x6309;&#x94AE;&#x4E00;&#x7684;&#x6570;&#x636E;&quot;,
      };
      let data2 = {
        msg: &quot;&#x6211;&#x662F;&#x6309;&#x94AE;&#x4E8C;&#x7684;&#x6570;&#x636E;&quot;,
      };
      //&#x53EF;&#x4EE5;&#x628A;&#x6240;&#x6709;&#x7684;&#x53C2;&#x6570;&#x7528; ...arg &#x5305;&#x8D77;&#x6765;
      function eventHandler(...arg) {
        console.log(arg); // [mouseevent ,10 ,20]
        //&#x5047;&#x8BBE;&#x6709;100&#x884C;&#x4EE3;&#x7801;
        console.log(this.msg);
      }
      /*
        function.bind(thisArg);
        bind:&#x514B;&#x9686;&#x5DE6;&#x4FA7;&#x51FD;&#x6570;&#xFF0C;&#x5E76;&#x4E14;&#x6307;&#x5B9A;&#x8BE5;&#x51FD;&#x6570;&#x5185;&#x90E8;this&#x7684;&#x6307;&#x5411;&#xFF0C;&#x8FD4;&#x56DE;&#x65B0;&#x51FD;&#x6570;&#xFF1B;
        &#x65B0;&#x51FD;&#x6570;&#x4E0D;&#x4F1A;&#x7ACB;&#x523B;&#x6267;&#x884C;
      */

      let btn1Event = eventHandler.bind(data1, 10, 20);
      let btn2Event = eventHandler.bind(data2);
      btn1.addEventListener(&quot;click&quot;, btn1Event);
      btn2.addEventListener(&quot;click&quot;, btn2Event);
    &lt;/script&gt;
    &lt;/body&gt;
</code></pre>
                    
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